一种硫铜化合物碳基复合材料为正极的铝离子电池，涉及铝离子电池，其中，正极为Cu2‑xS‑碳基复合材料，所述Cu2‑xS包含Cu2S、Cu1.96S、Cu1.8S、Cu1.75S、Cu1.6S、Cu1.39S、Cu1.12S、Cu0.5S。负极为高纯铝或含铝合金，电解液为含铝离子非水系电解液。所提供的铝离子电池具有比容量高、制备工艺简单、原材料便宜且对环境友好等优点，其首圈放电比容量高达140mA h g‑1，具有两对清晰的充放电平台，与循环伏安曲线中两对还原氧化峰对应，说明在Al的嵌入过程中发生了两步反应。铝离子电池可应用于如便携式电子设备、电动汽车、大型储能电站多种领域。
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